Edifier R1380DB-BR Features • All wooden enclosure minimizes acoustic resonance • 1-inch(25mm) tweeter and 4-inch(116mm) mid-bass driver • Class-D amplifier with 42W RMS total power output • TI PCM9211 digital decoding chip for precise audio processing • Versatile connectivity: Optical, Coaxial, Line In, and Bluetooth inputs • Bluetooth V5.1 with Qualcomm® aptX™ • Side panel controls and remote control for easy operation Specifications Bluetooth version V5.1 Audio codecs APTX, SBC Power output (RMS) 21W+21W Frequency response 55Hz-20KHz Audio inputs Optical, Coaxial, Line In, Bluetooth Input sensitivity Line In1: 450±50mV Line In2: 550±50mV Optical/Coaxial: 450±50mFFs Bluetooth: 700±50mFFs Signal-noise ratio ≥85dB(A) Noise level ≤35dB(A)